We may receive a commission on purchases made from links. The MacBook Air might be the best Apple laptop for most users, but battery life, while impressive, is hardly the best on the market. Apple promises 18 hours of battery life, but benchmarks and real-world tests by dedicated users don’t quite reach that number. That’s not surprising, given the limited 53.8 Whr battery, but most test still go above 12 hours on a single charge,  plenty of time for most users. But if you’re...